In addition to the data exposure, hackers were performing crypto mining from within one of Tesla’s Kubernetes pods. The team noted some sophisticated evasion measures that were employed in this attack.
- Unlike other crypto mining incidents, the hackers did not use a well known public “mining pool” in this attack. Instead, they installed mining pool software and configured the malicious script to connect to an “unlisted” or semi-public endpoint. This makes it difficult for standard IP/domain based threat intelligence feeds to detect the malicious activity.
- The hackers also hid the true IP address of the mining pool server behind CloudFlare, a free content delivery network (CDN) service. The hackers can use a new IP address on-demand by registering for free CDN services. This makes IP address based detection of crypto mining activity even more challenging.
- Moreover, the mining software was configured to listen on a non-standard port which makes it hard to detect the malicious activity based on port traffic.
- Lastly, the team also observed on Tesla’s Kubernetes dashboard that CPU usage was not very high. The hackers had most likely configured the mining software to keep the usage low to evade detection.